Benchmarking of WIMS-AECL/RFSP multicell methodology with MCNP for ACR-1000 full-core calculations

  • W. Shen
  • , D. A. Jenkins
  • , A. Connolly
  • , I. Attieh
  • , D. Buss
  • , T. Liang
  • , S. Hart

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

For an accurate calculation of the power distribution in a reactor core, it is important to generate lattice-cell cross sections for the fuel lattice, accounting for local conditions and the burnup history of the fuel, as well as the effect of the neighbouring lattices. The cross-section data employed in commercial core-analysis diffusion codes are usually based on the use of single-lattice-cell calculations without considering the effect of the environment. This fundamental assumption is not sufficiently accurate for certain heterogeneous core configurations which may occur in the ACR-1000®. The multicell methodology developed in the CANDU® core-analysis code RFSP allows an accurate treatment of neutronic heterogeneity, while maintaining the basic structure of the single-lattice-cell-based reactor-physics methodology used for CANDU reactors for many years. This paper presents benchmarking results between WIMS-AECL/RFSP multicell methodology and MCNP5 full-core calculation for the ACR-1000. The benchmarking results show that the multicell methodology implemented in WIMS-AECL/RFSP can capture the effects due to heterogeneity in the ACR-1000 core-reflector interface.

Original languageEnglish
Title of host publicationInternational Conference on the Physics of Reactors 2008, PHYSOR 08
PublisherPaul Scherrer Institut
Pages1106-1113
Number of pages8
ISBN (Print)9781617821219
StatePublished - 2008
Externally publishedYes
EventInternational Conference on the Physics of Reactors 2008, PHYSOR 08 - Interlaken, Switzerland
Duration: 14 Sep 200819 Sep 2008

Publication series

NameInternational Conference on the Physics of Reactors 2008, PHYSOR 08
Volume2

Conference

ConferenceInternational Conference on the Physics of Reactors 2008, PHYSOR 08
Country/TerritorySwitzerland
CityInterlaken
Period14/09/0819/09/08

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